Hand punch



A. R. HEISE 1,962,193

HAND PUNCH Filed April 11. 1932 June 12, 1934.

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INVENTOR Arffiur 1?. fluke HIS ATTORNEY-S Patented June 12, 1934 UNITEDSTATES PATENT OFFICE HAND PUNCH Arthur R. Heise, Woodbridge, Conn,assignor to The Wm. Scholihorn Company, New Haven, Conn, a corporationof Connecticut Application April 11, 1932, Serial No. 604,641 10 Claims.(01. 164-420) This invention relates to hand punches, such, more ruggedconstruction and intended for heavier for example, as those used forcancelling tickets. duty than the punch shown in Fig. 1; Such punchesare arranged to cut out apertures Fig. '7 is a central longitudinalsection taken g of various shapes in thin sheets of paper or cardthroughthe jaws of the punch of Fig. 6, and 5 board. Thus, they may be arrangedto punch with the addition of a device for retaining the round holes, orholes in the shape of clubs, diaconfetti or punched-out material. monds,hearts, spades, numerals, and various Referring now to the accompanyingdrawing, other configurations. and first to Figs. 1 to 5, inclusive,there is here The invention relates more particularly to hand shown a puhaving CIOSS levers 1 a d 2 pivoted 1U punches of extremely low cost andselling priceat 3 by means of a rivet. The cross levers extend 65punches which retail, for example, for from ten to the right to formhandles 4 and 5 and to the to fifty cents. each. left to form jaws 6 and'7. These parts are The principal object of the present invention ispunched out of sheet metal of suitably heavy to provide improvements inthe construction of gauge and then formed by stamping in a press suchpunches which render them more convenient to produce the rounded outerhandle surfaces and satisfactory to use without appreciably inshown inFig. 1 which a hollow 0n the d creasing the cost of manufacture. Amongthe and also to p o e j w a e W ch a e reinspecific objects of theinvention are the following: forced by fl To provide in a hand punch oflow cost, mech- Th h pp r r p n j 6 i s f a 20 anism for protecting thepunch and die against. flat web or face 8 along each side of which areinjury from attempts by the user to squeeze the flanges 9 a Similerly lw c ns ts o punch too tightly or to punch therewith thicker a W b face11 having Side flanges 12 d material than that for which the punch isin- The flang s 9 and 10 and the flanges 12 and tended; to provideahandpunch of lowcost having 13 form between them channels each of which 25astripper device which will not mark the work is pr f r bly cl d t iouter n y a nand which is effective in operation; to provide in a t u cef e respective fl ThiS gives hand punch of low costaretainer for thepunchedthe T1056 0f the punch a neat pp and out material which will notpermit this material the curved outer end portion 0f t lower Or I toescape, die jaw serves as a guide to facilitate the entrance 30 Thevarious features of the invention are illus- 0f t material to b pdtrated in the accompanying drawing and set forth The wo cross levers land 2 are mortised in the following description. The embodiments of togth at the hinge Divot 3 as y be Seen theinvention herein shown anddescribed are, e particularly in the Side plates of however, to beconsidered as merely illustrative OIOSS v 2 passing between the Sideplates of 35 'of the principles of the invention, and changes CTOSS e Ahelical Spring f i i s h may be made in the construction of the punchpivot P 350119 end thereof prolectllllg Into and still make use of theinvention, the scope of gagement Wlth the mner surface of hollow whichis indicated in the claims appended hereto. handle 5 and the Other dlarly extending In the accompanying drawing into engagement with theinner surface oi the Fig. 1 is a side elevation of one form of my 9handle The extension of t Sprmg 9' improved hand punch, within handle 4is preferably formed into a loop Fig. 2 is a vertical longitudinalsection, drawn 3 5 3? if}?iii t i gg i g g i 5 225 33 2: to an enlargedscale, taken through the Jaws and finger of the hand when not in use Itwill 4 pilot of thepunch Shownin lthe jaws being be understood thatspring 14 biases apart the n Open positifm; jaws of the punch.

3 is a slmllar to 2 except that the The jaw frames 6 and 7 are identicalin con- Pllnch is shown In Closed 13051151011? struction except for thefact that the face 8 of Fig. 4 is a plan View of the parts shown inFigs. jaw 6 has a punch 16 mounted thereon, and the e v face 11 of jaw 7is provided with a die 17. Punch Fig. 5 is a transverse vertical sectiontaken on 16 is reduced in d t t t upper end and line 5 o inserted in asuitable aperture in face 8 and held F 6 is a Side elevation drawn to aSl gh ly therein by peening over the reduced portion to smaller scalethan Fig. l of a modification of the form a head 18.

5' invention this form of punch being of somewhat Die 1'7 is formed byupsetting the outer portion of jaw face 11 so as to displace the outersurface of the die slightly from the surface of the jaw face, and thenforming an opening in this upset portion corresponding in configurationto the punch 16. In the examples shown in the drawings the punch and dieare round, but it will be understood that they may be made of anysuitable shape, some of which were mentioned at the beginning of thisspecification.

By making the jaws 6 and 7 identical in formation the blanks for thecross levers 1 and 2 are identical in their original configuration, andhence are punched out by the same punch and die. Also, the same formingpunch and die are used to provide the curved formation of both handles 4and 5 and the channeled or flanged construction of both jaws 6 and 7.Hence, up to this point in the manufacture of the punch,

the two cross levers l and 2 are identical. Subsequently to this theside plates of cross lever 1 are expanded, as shown in Fig. 4, by meansof a stamping operation so as to permit the mortising of lever 2 withinlever 1. After this the punch 16 and the die 17 are placed on therespective jaws of the levers 1 and 2.

It is important in a hand punch of this sort to provide a stop forlimiting both the closing and the opening movement of the punch jaws. Ifsuch a stop is not provided the too tight squeezing of the handles willforce the inner surface of the punch 16 against the wall of the die,causing undue wear upon both of these parts and also tending to loosenthe punch from its seat. It will be understood that undue wear may takeplace in this way since in a punch which is built to sell in the priceclass of the present punch both the punch and die are made of mild steeland neither are hardened otherwise than by the hardening eifect producedby the cold working of the metal.

Moreover, in order to prevent a prohibitive increase in the cost ofmanufacture of the punch, this stop must be of extremely simpleconstruction and easily applied to the punch during manufacture. Inaccordance with the present invention, in order to provide this stop,the web or face 8 of the punch jaw 6 is provided with an aperture 19which preferably is open at one end where it intersects the inner end ofweb 8 as may be seen in Figs. 2 and 4. A stop pin 20 is fixed to the webor face 11 of jaw 7 near its inner end. This stop pin is provided withan enlargement 21, which abuts against the upper surface of face 11, andalso with a head 22. Stop pin 20 is conveniently in the form of a screwhaving its lower end tapped into face 11, and while enlargement 21 maybe made integral with pin 20 it preferably consists of a collar throughwhich the pin 20 passes. By having the aperture 19 open at one end, pin20 can be placed in position even though enlargement 21 is integral withthe pin.

The punch is also provided with a stripper 23, which in the form ofpunch shown in Figs. 1 to 5, inclusive, comprises one leg of asubstantially U-shaped strip of resilient metal such as spring steel,the other leg of which constitutes a cover 24 for the channel formedbetween flanges 12 and 13 of the die jaw 7 so as to retain therein theconfetti or punched-out material. The

substantially U-shaped strip of metal just referred to is preferablyfixed in position by the stop pin 20 which has a shoulder 25 whichclamps the rear portion of the stripper 23 against the top ofenlargement or collar 21.

Hence, when the jaws of the punch are closed as shown in Fig. 3, themovement of the jaws is limited by the engagement of the upper surfaceof stripper 23 opposite enlargement 21 with the lower surface of web orface 8 of jaw 6 adjacent the aperture 19. This limits the extent towhich punch 16 may enter the die 17. When the handle of the punch isagain released and the jaws opened, the extent of this movement islimited by the engagement of the head 22 of the pin 26 with the uppersurface of web 8 as shown in Fig. 2.

During this opening movement, the stripper 23 is engaged by the paper orother material which has been punched so as to cause the punch 16 to bewithdrawn from the aperture made in the paper, or, in other words, thepunched material is stripped from the punch 16. It will be understoodthat stripper 23 is provided with an aperture 26 somewhat larger thanthe punch 16 so that the punch will be freely movable therethrough. Alsothe outer end of the stripper 23 is bent upwardly so as to serve as aguide to direct the paper between the jaws of the punch. As previouslymentioned, the curved outer nose of the jaw '7 serves as a coactingguide.

Although stripper 23 is secured to the jaw 7 at only one point, theportion of the stripper beyond pin 20, that is, the bottom of theU-shaped piece fits snugly between the flanges l2 and 13 just beyond theend of web 11, and thereby the U- shaped strip is held against lateralmotion.

The cover portion 24 of the U-shaped strip is preferably provided withshallow internal flanges 27 which may be seen in Figs. 2, 3 and 5 andwhich form convenient means for producing a tight fit between the cover24 and the upper edges of the flanges. In order to remove thepunched-out ma terial from the retaining space between flanges 12 and 13the cover 24 is moved outwardly to the dotted position shown in Fig. 3,and in order to provide a convenient means for grasping this cover withthe fingers the outer end of the cover preferably projects slightlybeyond the nose of the punch.

In Fig. 3 a sheet 28 has been inserted in the punch and a hole punchedtherein. It will be observed that the pressure of punch 16 during thepunching operation, together with the friction of the walls of thepunched hole with the outer surface of the punch maintains the sheetagainst the surface of die 17, the stripper 23 not having made contactwith the sheet except insofar as it served as a guide for the insertionof the sheet. During the opening of the punch jaws stripper 23 will moveinto contact with the sheet 28 and strip the sheet from contact with thepunch 16. The pressure exerted by the stripper, however, will be onlythat necessary to overcome the friction of the walls of the punchedholes with the surface of the punch, and this is insuflicient to producea mark upon the surface of the sheet 28.

In prior punches of this type it has been customary to mount arelatively stiff spring stripping piece upon the punch jaw, this springextending downwardly slightly below the end of the punch. This type ofstripper made contact with the sheet being punched ahead of the end ofthe punch, and during the punching operation the stripper had to beflexed. Accordingly, considerable pressure was exerted by the stripperwhich caused an undesirable marking of the sheet. Moreover, as thestripper was necessarily comparatively stiff, it increased the amount ofpressure required to operate the punch. With the stripper of the presentinvention, however, there is no marking of the work and the punch iseasier to operate.

In the modified form of punch shown in Figs. 6 and 7, the cross levers29 and 30 together with the punch jaws and handles are stamped fromsheet material after the manner of the punch previously described. Thehandles, however, are subjected to a further stamping operation whichturns the inner margins 31 of the flanges inwardly into abuttingrelation so that although the handles are hollow they have continuoussurfaces on the inside as well as the outside, thereby presenting theappearance of a cast instead of a stamped product.

To carry out this same effect, the flanges 32 of the punch jaws are madestraight instead of curved. Also, the biasing spring instead of beingcarried upon the hinge is made in the form of a straight helical spring34 which extends between the handles. In order to maintain spring 34straight a rigid core 35 is loosely carried within the interior of thespring. The stop pin or screw 20a is similar in construction to thatpreviously described and operates in the same manner.

The punch of Figs. 6 and 7 is of heavier construction and adapted topunch larger holes than that shown in the previous figures of thedrawings. It is necessary to provide a sturdier stripper. This stripper36 is made in the form of a substantially rigid bar, which is secured tothe die jaw by means of the stop pin 20a as before. The tail portion 3'7which extends between the flanges 33 of the die jaw and fits snuglytherebetween also as before prevents side- Wise movement of thestripper.

If it is desired to provide this form of punch with a retaining chamberfor clipping, the tail portion 37' of the stripper is extended tothesurface of flanges 33 passing in close proximity to the end 38 of theweb or face of the die jaw. Then a strip 39 of resilient material, such,for example, as spring steel is bent to substantially the shapeindicated in Fig. '7, having a reentrant portion 40 which fits looselyover the hinge pin. The upper leg of this strip 39 overlies the channelbetween flanges 32 and forms a finish for the punch jaw which concealsthe channel construction as well as the head of the punch 16a and headof the stop pin 20a. The lower leg of strip 39 similarly engages theflanges 33 and forms a cover for the space between these flanges so asto hold the clippings therein.

In order to discharge the clippings the end of this lower leg extendsbeyond the end of the lower jaw so that it may be engaged by the finger.Strip 39 is substantially fiat in cross section and fits loosely betweenthe side plates of the cross levers so that its resilient legs are freeto contact with the two punch jaws. It is prevented from longitudinalmovement by the engagement of the reentrant section 40 with the hingepin. Since the two legs of strip 39 are of similar shape and appearance,they impart a similarity of appearance to the two jaws of the punch. Ifdesired, however, the lower leg portion of strip 39 may be provided withreentrant flanges similar to the flanges 27 of Fig. 5.

I claim:

1. In a hand punch, the combination with pivoted cross levers, of jawscarried thereby one of which has outwardly extending flanges along thesides of its face said face having an aperture therein, a spring forurging the jaws apart, a post on said other jaw and extending throughsaid aperture, said post having an enlargement atits base for coactingwith the inner surface of said flanged jaw to form a stop limiting theextent to which the jaws can be closed, and said post having a headcoacting with the outer surface of said flanged jaw to limit the openingof the jaws.

2. In a hand punch the combination with pivoted cross levers, of a pairof coacting jaws 'carried thereby, a punch mounted upon one of saidjaws, a die carried by the other of said jaws, a stripper membercomprising a bar mounted in parallel relation to said die jaw, a pin forsecuring said bar to the face of the die jaw, said bar having a tailportion on the pivot side of said pin, and surfaces at least a part ofwhich is on said die jaw cross lever engaging said tail portion on thepivot side of said pin so as to hold the stripper bar against lateralmovement.

3. In a hand punch the combination with pivoted cross levers, of a pairof coacting jaws carried thereby having outwardly extending flanges atthe sides of the jaw faces, a die on the inner face of one of said jawsand acoacting punch on the inner face of said other jaw, a strippercomprising a bar arranged in parallel relation to the inner face of saiddie jaw, and a pin for securing said bar to the face of said jaw, saidbar hav ing a tail portion at least a part of which is on the pivot sideof said pin and fits between the flanges of the die jaw on the pivotside of said pin, thereby holding said bar against sidewise movement.

4. In a hand punch, the combination with cross levers, of jaws carriedthereby, one of whichhas a channel on its outer face and a die on itsinner face, a strip of resilient metal overlying said channel andsecured to said jaw thereby closing the space within said channel toform a retaining chamber for punched-out material, said chamber beingopened for the discharge of material therefrom by the flexing of saidresilient strip.

5. In a hand punch, the combination with cross levers, of jaws carriedthereby, one of which has a channel on its outer face and a die on itsinner face, a strip of resilient metal overlying said channel andsecured to said jaw thereby closing the space within said channel toform a retaining chamber for punched-out material, said strip havinginwardly directed shallow flanges fitting between the side walls of thechannel so as to form a tight joint therewith, said chamber being openedfor the discharge of material therefrom by the flexing of said resilientstrip.

6. In a hand punch, the combination with cross levers of jaws carriedthereby, one of which has a channel at its outer face and a die on itsinner face, a punch on the other jaw, a substantially U-shaped strip ofresilient metal fixed to the jaw which carries the die, one leg of saidstrip serving as a stripper for said punch, and the other leg thereofserving as a cover for said channel so as to retain therein thepunched-out material.

7. In a hand punch, the combination with pivoted cross levers, of jawscarried thereby having outwardly extending flanges at the sides of thejaw faces, a die on the inner face of one of said jaws and a coactingpunch on the inner face of said other jaw, a spring for urging the jawsapart, the face of the punch jaw having an aperture therein between thepunch and said pivot, a post fixed to the die jaw and extending throughsaid aperture said post having an enlargement at its base for coactingwith the inner face of the punch jaw to form a stop limiting the closingmovement of the jaws, said post also having a head coacting with theouter face of the punch jaw limiting the opening movement of said jaws,and a U-shaped strip of resilient material fixed to said post, one legof said strip extending outward and serving as a stripper for the punch,and the remaining portion of said strip serving as a closure for thespace between the flanges of the die jaw and providing a retainer forpunched out material.

8. In a hand punch, the combination with cross levers, of jaws carriedthereby, one of which has a channel on its outer face and a die on itsinner face, a stripper of resilient metal secured to said jaw andextending laterally from the rear end of said jaw between the faces ofsaid channel to form with said channel the rear end of a retainingchamber for punched-out material, said strip also extendinglongitudinally of the punch and coacting with the outer edges of saidchamber to form the outer wall of said "chamber, said chamber beingopened for the discharge of material therefrom by the flexing of saidresilient strip.

9. In a hand punch, the combination with pivoted cross levers, of a pairof coacting jaws carried thereby, one of which has outwardly extendingflanges on the sides of its face, a die carried by said jaw and a punchmounted upon the other of said jaws, a stripper member comprising a barmounted in parallel relation to the face of said die jaw, means forattaching said bar to said jaw, said bar having a portion extendinglaterally at the rear end of said face between the said flanges andforming the rear wall of a retaining chamber for punched-out material,and means coacting with said flanges and the laterally extending portionof said bar to form the outer wall of said retaining chamber.

10. In a hand punch, the combination with cross levers, of jaws carriedthereby, each of which has a channel on its outer face and a punchmember on its inner face, a pin for pivoting said cross levers the oneon the other, and a substantially U-shaped strip of resilient metalattached to said pivot pin, one leg of said strip overlying each of saidchannels.

ARTHUR R. HEISE.

